<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title>Demo 04</title>
    <style>
      .box {
        width: 350px;
        height: 150px;
        margin: 10px;
        padding: 25px;
        border: 5px solid black;
      }
    </style>
  </head>
  <body>
    <div class="box">This is content</div>
  </body>
</html>
